Design
4 min
The dial, 200 knurls at a time
We cut the dial on a lathe, knurl the edge and anodise it twice. It clicks every 2 dB so you can set it without looking.

From bar stock
Each dial starts as a 70 mm aluminium bar. It is turned, knurled with 200 ridges, bead-blasted and anodised.
Detents you can count
The dial clicks at every 2 dB. Twenty clicks from quiet to loud, which is enough to find your level in the dark.
Written by the Tolva workshop
Four engineers and a designer. Questions about this note go straight to the person who wrote it.
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More from the workshop.

Preorder · Batch one
Reserve yours for $49 today.
The deposit comes off the $349 price and is refundable until your Column ships. We charge the rest a week before it leaves.
Today
Reserve with a $49 deposit
Feb 2027
Batch one of 2,000 goes into production
Mar 2027
Ships, in the order you preordered
Questions
Before you preorder.
Anything else, write to us and a person who built it will answer within a day.
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